121652166 has 16 divisors (see below), whose sum is σ = 249239088. Its totient is φ = 39561600.

The previous prime is 121652149. The next prime is 121652191. The reversal of 121652166 is 661256121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247015 + ... + 247506.

It is an arithmetic number, because the mean of its divisors is an integer number (15577443).

Almost surely, 2^121652166 is an apocalyptic number.

121652166 is an abundant number, since it is smaller than the sum of its proper divisors (127586922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121652166 is a wasteful number, since it uses less digits than its factorization.

121652166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494567.

The product of its digits is 4320, while the sum is 30.

The square root of 121652166 is about 11029.6040726764. The cubic root of 121652166 is about 495.4957669457.

The spelling of 121652166 in words is "one hundred twenty-one million, six hundred fifty-two thousand, one hundred sixty-six".